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3-Heights™ PDF Extract

Overview
Functions
Benefits

Areas of Use
Technical Details

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Overview

3-Heights™ PDF Extract is a component for reading out the contents and properties of PDF documents.

PDF documents are used to store important information relating to products, customer data and corporate knowledge. Meta information such as the document's creator, date of creation or date of modification are further integral parts of a PDF document. PDF documents are often used as "containers" to enable the transfer of text, images, videos and other data to other processes independently of the platforms in use.

This component can extract information quickly and efficiently, regardless of whether document content or document properties. The results can be stored in a

database, for instance, or used for evaluations and statistics or to secure internal corporate knowledge.

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Functions

Information is extracted on the basis of the object type. The component supports the following objects and their respective properties:

Document

Query document attributes, including:
- Author
- Title
- Subject
- Keywords
- Application
- PDF Producer
- Creation date
- Modification date
Is the document encrypted?
Is the document linearized (optimized for fast web view)?
PDF version, e.g. 1.4, 1.7
Read the document from the file or from memory
Query the number of pages
Properties of bookmarks
Query page labels (e.g. "vii", "IX")
Properties of resources (image, color space, fonts)
Destinations
List and extract embedded files
List and set optional content groups (layers)

Page Content

Jump to next object (object, image, text, path) and query its attributes (image, text)
Query current graphics state

Text

Extract text as Unicode by the character, word or page
Supports texts that do not contain space characters
Coordinates (X, Y)
Bounding box
Font size in points
Length in points
Length in characters
Rotation

Font Type

All, average, standard missing width and maximum width of glyphs
Base name
Height of uppercase and lowercase letters
Available character names of the font subset
Encoding
Flags
Bounding box
Datastream of a font program
Type (e.g. TrueType, Type1)
Tilt angle of italic fonts
Recommended distance between base line and following line (leading)
Vertical and horizontal width of glyph stems

Color Space

Base color space
Colorant
Components per pixel
The highest index value for indexed color spaces
Color space (colorant, indexed, monochrome)
Lookup table
Name

Image

Height and width in pixels
Resolution (DPI)
Number of bits per channel
Color space (bi-tonal, monochrome, color)
Convert to RGB
Alternative image
Extract image (from file or memory) and set orientation
Set the compression of extracted and stored TIFF image (Flate, CCITT G3, G3-2D, G4, JPEG, LZW, none)
Mask, transparency mask
Alternative image and whether it should be used as standard for printing

Graphics State

Blend mode
Spacing between characters and words
Current transformation matrix
Elements and phase of a dash pattern
Color space of fill and line colors
Fill and line colors as RGB or CMYK value
Overprint settings for fill and line colors
Alpha constant of fill and line colors
Flatness tolerance
Font and font size (see Font)
Horizontal scaling
Text style (leading, line spacing)
Line style (line cap, line join, miter limit) and line width
Name of the rendering intent
Smoothness tolerance
Soft mask
Text knockout
Text rendering mode
Text relocation (up or down)

Transformation Matrix

Transformation values
Orientation
Rotation
Scaling in X and Y direction
Positioning in X and Y direction
Skewing in X and Y direction

Annotation

Annotation type
Color
Contents
Date
Destination
Flags
MarkUp annotation
Name
Position (rectangle)
Subject
TextLabel
URL
Corner points if it is a polygon

Bookmarks

Quantity
Destination
Title

Destination

Position (coordinates for bottom left and top right)
Type
Page number

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Benefits

Properties and Benefits

Texts extracted using the 3-Heights™ PDF Extract Tool can be used for indexing documents or in search engines, for instance. The component is generally used to extract data and resources from a PDF document for further processing. Highly detailed information is available for the purpose, which can also be transferred to document management systems (DMS) in various forms.

Performance Characteristics

Extract text by the character, word or page (including invisible text)
Search for keywords and retrieve their position
Extract images (including alternative images)
Retrieve form fields
Extract document information such as version, encryption, linearization and metadata
List fonts and color spaces
Extract page information and page descriptions (graphic objects, position and other attributes)
Extract bookmarks

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Areas of Use

Incoming Mail and Document Processing

Content from PDF files such as forms or scanned incoming invoices, for instance, is extracted and processed for characterization or indexing.

Outgoing Mail

PDF documents are restructured in preparation for use by other target groups. The process reads out processing information such as barcodes, address information or page formats that can then be used for controlling printing and packaging lines or sorting processes.

Archiving

Texts or their components are extracted for separate storage in metadata. This allows document indexing to be extended as required.

Other Areas of Use

Convert PDF documents into text documents
Extract information such as addresses, invoice data and report data from documents for process control purposes
Extract information for document classification and document indexing
Process data in forms
Extract images for further processing (scans, photos, etc.)
Analyze and evaluate the content of PDF documents in mass processing

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